The four moons were discovered sometime between 1609 and 1610 when Galileo made improvements to his telescope.Galileo’s discovery showed the importance of the telescope as a tool for astronomers by proving that there were objects in space that cannot be seen by the naked eye.
Jupiter and its moons.
The four moons were discovered sometime between 1609 and 1610 when Galileo made improvements to his telescope.Galileo’s discovery showed the importance of the telescope as a tool for astronomers by proving that there were objects in space that cannot be seen by the naked eye.